A charge oscillates sinusoidally in the vertical direction about the origin. Shown is the value of the y-component of the electric field where large positive/negative values is given by red/blue areas and small positive/negative values is given by light red/light blue areas.

published:06 Feb 2008

views:1459

This video shows the electric and magnetic fields of a positive point charge, which is initially at rest, but which starts oscillating in the horizontal direction when the video starts.
In the beginning of the video, we see a simple Coulomb electric field due to the point charge (no magnetic fields are present yet). When the particle starts moving, disturbances in the field propagate at the speed of light. Radiation is emitted.
Note the so-called 'static zone' near the particle when it radiates - close to the particle, the electric field is more or less constant, except for the phase.
The coloring works as follows: each pixel has R, G, B components, which have values between 0 (black) and 1 (full intensity). The components are set using:
R = 0.5 + E.x
G = 0.5 + E.y
B = 0.5 + B.z
If all vector components are zero, the pixel is halfway between black/white, or grey. Vector components can be positive or negative and thus add/subtract red, green, or blue.
I computed the fields and made the video using a C++ program that I published on GitHub:
https://github.com/tbronzwaer/electrodynamics
The equations that describe the electric and magnetic fields of a moving charge are available on Wikipedia:
http://en.wikipedia.org/wiki/Li%C3%A9nard%E2%80%93Wiechert_potential#Corresponding_values_of_electric_and_magnetic_fields

published:05 Sep 2014

views:2492

This is a demonstration of capacitor charge, carried out by suspending a ball between two capacitor plates of opposite charges. When the ball touches one plate, it acquires charge of the same sign as that plate. The ball is then attracted to the other plate, acquires charge of the same sign as that plate, and returns to the first plate, and so on, the result being fast oscillations of the ball between the two plates.
This demonstration was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and RebeccaWhitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, ExecutiveVice Provost and Dean of Academic and Instructional Services.

published:20 Aug 2016

views:742

published:22 Nov 2009

views:8426

Every charge that accelerates emits light that indicates how it has been accelerating. This can be used for radio and other long-range communications!

This video explains the particle nature of light, its connection to electric and magnetic field oscillations, their connection to frequency, wavelength, and to the energy of a photon.
"Generally, EM radiation, or EMR (the designation "radiation" excludes static electric and magnetic and near fields), is classified by wavelength into radio, microwave, infrared, the visible region that we perceive as light, ultraviolet, X-rays and gamma rays.
The behavior of EMR depends on its wavelength. Higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. When EMR interacts with single atoms and molecules, its behavior depends on the amount of energy per quantum it carries.
EMR in the visible light region consists of quanta (called photons) that are at the lower end of the energies that are capable of causing electronic excitation within molecules, which leads to changes in the bonding or chemistry of the molecule. At the lower end of the visible light spectrum, EMR becomes invisible to humans (infrared) because its photons no longer have enough individual energy to cause a lasting molecular change (a change in conformation) in the visual molecule retinal in the human retina, which change triggers the sensation of vision." from Wikipedia "light", www.wikipedia.com, Sept 9, 2017

published:04 Sep 2017

views:3212

For more information:
http://www.7activestudio.com
info@7activestudio.com
http://www.7activemedical.com/
info@7activemedical.com
http://www.sciencetuts.com/
7activestudio@gmail.com
Contact: +91- 9700061777,
040-64501777 / 65864777
7 ActiveTechnology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of HappyLearning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use.
Electro magnetic waves: ELECTROMAGNETIC WAVES:- It was observed that a time varying magnetic field acts as a source of electric field and a changing electric filed give raise to magnetic field they any one of above fields changing with time a field of other kind id introduced. Consider a charge oscillating with same frequency this produces an oscillating electric filed in space .which produces an oscillating magnetic filed .this oscillating electric and magnetic field regenerate each other the wave propagates through the space .the frequency of electromagnetic wave is equal to frequency of oscillation of the charge.The detailed study shows that plane progressing electromagnetic wave so produced the following characteristics. The electric vector E ⃗ the magnetic vector B ⃗ are mutually perpendicular to each other are travelling in space to generate electromagnetic progressive wave and the direction of propagation of the wave is perpendicular to both electric vector and magnetic vector If the wave propagates in X-direction the electric field in y- direction the magnetic field is in the z-directions.

published:09 Jul 2014

views:108892

This lesson uses a simple antenna system to show how a changing electric field causes a changing magnetic field to propagate outward from the antenna. The changes in the fields travel outwards from the transmitter at the speed of light.

published:16 Sep 2014

views:2338

In this video I find the frequency of oscillation of an electron near the center of a ring of positive charge. I first find the force on the electron by calculating the electric field along the axis of the ring.

Electromagnetic radiation

Electromagnetic radiation (EM radiation or EMR) is the radiant energy released by certain electromagnetic processes. Visible light is one type of electromagnetic radiation; other familiar forms are invisible electromagnetic radiations, such as radio waves, infrared light and X rays.

Electromagnetic waves are produced whenever charged particles are accelerated, and these waves can subsequently interact with any charged particles. EM waves carry energy, momentum and angular momentum away from their source particle and can impart those quantities to matter with which they interact. Quanta of EM waves are called photons, which are massless, but they are still affected by gravity. Electromagnetic radiation is associated with those EM waves that are free to propagate themselves ("radiate") without the continuing influence of the moving charges that produced them, because they have achieved sufficient distance from those charges. Thus, EMR is sometimes referred to as the far field. In this language, the near field refers to EM fields near the charges and current that directly produced them, specifically, electromagnetic induction and electrostatic induction phenomena.

Electric Field of an Oscillating Charge

Oscillating charge

A charge oscillates sinusoidally in the vertical direction about the origin. Shown is the value of the y-component of the electric field where large positive/negative values is given by red/blue areas and small positive/negative values is given by light red/light blue areas.

This video shows the electric and magnetic fields of a positive point charge, which is initially at rest, but which starts oscillating in the horizontal direction when the video starts.
In the beginning of the video, we see a simple Coulomb electric field due to the point charge (no magnetic fields are present yet). When the particle starts moving, disturbances in the field propagate at the speed of light. Radiation is emitted.
Note the so-called 'static zone' near the particle when it radiates - close to the particle, the electric field is more or less constant, except for the phase.
The coloring works as follows: each pixel has R, G, B components, which have values between 0 (black) and 1 (full intensity). The components are set using:
R = 0.5 + E.x
G = 0.5 + E.y
B = 0.5 + B.z
If all vector components are zero, the pixel is halfway between black/white, or grey. Vector components can be positive or negative and thus add/subtract red, green, or blue.
I computed the fields and made the video using a C++ program that I published on GitHub:
https://github.com/tbronzwaer/electrodynamics
The equations that describe the electric and magnetic fields of a moving charge are available on Wikipedia:
http://en.wikipedia.org/wiki/Li%C3%A9nard%E2%80%93Wiechert_potential#Corresponding_values_of_electric_and_magnetic_fields

1:59

Capacitor Charge Demo: Oscillating Ball

Capacitor Charge Demo: Oscillating Ball

Capacitor Charge Demo: Oscillating Ball

This is a demonstration of capacitor charge, carried out by suspending a ball between two capacitor plates of opposite charges. When the ball touches one plate, it acquires charge of the same sign as that plate. The ball is then attracted to the other plate, acquires charge of the same sign as that plate, and returns to the first plate, and so on, the result being fast oscillations of the ball between the two plates.
This demonstration was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and RebeccaWhitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, ExecutiveVice Provost and Dean of Academic and Instructional Services.

0:19

Electric and magnetic field generated by oscillating electric charge.avi

Electric and magnetic field generated by oscillating electric charge.avi

Electric and magnetic field generated by oscillating electric charge.avi

Light, photons, and oscillating electromagnetic fields explained.

This video explains the particle nature of light, its connection to electric and magnetic field oscillations, their connection to frequency, wavelength, and to the energy of a photon.
"Generally, EM radiation, or EMR (the designation "radiation" excludes static electric and magnetic and near fields), is classified by wavelength into radio, microwave, infrared, the visible region that we perceive as light, ultraviolet, X-rays and gamma rays.
The behavior of EMR depends on its wavelength. Higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. When EMR interacts with single atoms and molecules, its behavior depends on the amount of energy per quantum it carries.
EMR in the visible light region consists of quanta (called photons) that are at the lower end of the energies that are capable of causing electronic excitation within molecules, which leads to changes in the bonding or chemistry of the molecule. At the lower end of the visible light spectrum, EMR becomes invisible to humans (infrared) because its photons no longer have enough individual energy to cause a lasting molecular change (a change in conformation) in the visual molecule retinal in the human retina, which change triggers the sensation of vision." from Wikipedia "light", www.wikipedia.com, Sept 9, 2017

2:42

ELECTROMAGNETIC WAVES PART 01

ELECTROMAGNETIC WAVES PART 01

ELECTROMAGNETIC WAVES PART 01

For more information:
http://www.7activestudio.com
info@7activestudio.com
http://www.7activemedical.com/
info@7activemedical.com
http://www.sciencetuts.com/
7activestudio@gmail.com
Contact: +91- 9700061777,
040-64501777 / 65864777
7 ActiveTechnology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of HappyLearning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use.
Electro magnetic waves: ELECTROMAGNETIC WAVES:- It was observed that a time varying magnetic field acts as a source of electric field and a changing electric filed give raise to magnetic field they any one of above fields changing with time a field of other kind id introduced. Consider a charge oscillating with same frequency this produces an oscillating electric filed in space .which produces an oscillating magnetic filed .this oscillating electric and magnetic field regenerate each other the wave propagates through the space .the frequency of electromagnetic wave is equal to frequency of oscillation of the charge.The detailed study shows that plane progressing electromagnetic wave so produced the following characteristics. The electric vector E ⃗ the magnetic vector B ⃗ are mutually perpendicular to each other are travelling in space to generate electromagnetic progressive wave and the direction of propagation of the wave is perpendicular to both electric vector and magnetic vector If the wave propagates in X-direction the electric field in y- direction the magnetic field is in the z-directions.

6:23

03 How Vibrating Charges Emit Electromagnetic Waves

03 How Vibrating Charges Emit Electromagnetic Waves

03 How Vibrating Charges Emit Electromagnetic Waves

This lesson uses a simple antenna system to show how a changing electric field causes a changing magnetic field to propagate outward from the antenna. The changes in the fields travel outwards from the transmitter at the speed of light.

9:01

Electron's frequency of oscillation due to a ring of charge

Electron's frequency of oscillation due to a ring of charge

Electron's frequency of oscillation due to a ring of charge

In this video I find the frequency of oscillation of an electron near the center of a ring of positive charge. I first find the force on the electron by calculating the electric field along the axis of the ring.

0:10

Effect of oscillating electric field on a methane/air non-premixed flame

Effect of oscillating electric field on a methane/air non-premixed flame

Effect of oscillating electric field on a methane/air non-premixed flame

This video (real time) shows the effect of an oscillating electric field of varying intensity and constant frequency on a methane flame burning in air (the flame is ~15 cm tall in this case).
The field is applied via a wire electrode (shown on the left of the flame, pointed at the base of the flame), which is insulated by a glass shell, raised to a large oscillating potential.
The counterelectrode is outside the field of view and consists of a 50x50cm vertically oriented grounded plate.
The field conditions here have been chosen to show the field-dependent transition between attractive interaction and repulsive interaction.

2:00

Electromagnetic Field of an Oscillating Charge in AR, revised

Electromagnetic Field of an Oscillating Charge in AR, revised

Electromagnetic Field of an Oscillating Charge in AR, revised

Added more magnetic field lines to accompany the electric field lines. Also, CBSNewsSunday morning is gotta be one of the best shows on TV.

2:18

Electromagnetic field of an oscillating charge in Augmented Reality

Electromagnetic field of an oscillating charge in Augmented Reality

Electromagnetic field of an oscillating charge in Augmented Reality

The electric field lines are the red wavy lines. The magnetic field lines are the yellow (counterclockwise) and green (clockwise) circular arcs. A test charge (cube) on a second marker responds to the electric field. The electric field consists of the static coulomb field and the radiation field in the far-field approximation.

59:51

9. Accelerated Charges Radiating Electromagnetic Waves

9. Accelerated Charges Radiating Electromagnetic Waves

9. Accelerated Charges Radiating Electromagnetic Waves

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit BuszaGeneral discussion of electromagnetic fields produced by moving charges, in particular by charges that accelerate.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

1:04

Electromagnetic RLC oscillating circuit

Electromagnetic RLC oscillating circuit

Electromagnetic RLC oscillating circuit

This simulation deals with an electromagnetic oscillating circuit, consisting of a capacitor (center) and an inductor (i.e. a coil, on the right). The electric field of the capacitor (red) and the magnetic field of the inductor (blue) are indicated by field lines in the circuit diagram. The density of these field lines shows the strength of the corresponding field. In addition, you can see the charge signs of the two capacitor plates and arrows for the (conventional) current direction.

Electric field of an oscillating charge.avi

Electric Field of an Oscillating Charge

Oscillating charge

A charge oscillates sinusoidally in the vertical direction about the origin. Shown is the value of the y-component of the electric field where large positive/negative values is given by red/blue areas and small positive/negative values is given by light red/light blue areas.

This video shows the electric and magnetic fields of a positive point charge, which is initially at rest, but which starts oscillating in the horizontal direction when the video starts.
In the beginning of the video, we see a simple Coulomb electric field due to the point charge (no magnetic fields are present yet). When the particle starts moving, disturbances in the field propagate at the speed of light. Radiation is emitted.
Note the so-called 'static zone' near the particle when it radiates - close to the particle, the electric field is more or less constant, except for the phase.
The coloring works as follows: each pixel has R, G, B components, which have values between 0 (black) and 1 (full intensity). The components are set using:
R = 0.5 + E.x
G = 0.5 + E.y
B = 0.5 + B.z
If a...

published: 05 Sep 2014

Capacitor Charge Demo: Oscillating Ball

This is a demonstration of capacitor charge, carried out by suspending a ball between two capacitor plates of opposite charges. When the ball touches one plate, it acquires charge of the same sign as that plate. The ball is then attracted to the other plate, acquires charge of the same sign as that plate, and returns to the first plate, and so on, the result being fast oscillations of the ball between the two plates.
This demonstration was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and RebeccaWhitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, ExecutiveVice Provost and Dean of Academic and Instructional Services.

published: 20 Aug 2016

Electric and magnetic field generated by oscillating electric charge.avi

Light, photons, and oscillating electromagnetic fields explained.

This video explains the particle nature of light, its connection to electric and magnetic field oscillations, their connection to frequency, wavelength, and to the energy of a photon.
"Generally, EM radiation, or EMR (the designation "radiation" excludes static electric and magnetic and near fields), is classified by wavelength into radio, microwave, infrared, the visible region that we perceive as light, ultraviolet, X-rays and gamma rays.
The behavior of EMR depends on its wavelength. Higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. When EMR interacts with single atoms and molecules, its behavior depends on the amount of energy per quantum it carries.
EMR in the visible light region consists of quanta (called photons) that are at the lower e...

03 How Vibrating Charges Emit Electromagnetic Waves

This lesson uses a simple antenna system to show how a changing electric field causes a changing magnetic field to propagate outward from the antenna. The changes in the fields travel outwards from the transmitter at the speed of light.

published: 16 Sep 2014

Electron's frequency of oscillation due to a ring of charge

In this video I find the frequency of oscillation of an electron near the center of a ring of positive charge. I first find the force on the electron by calculating the electric field along the axis of the ring.

published: 28 Feb 2015

Effect of oscillating electric field on a methane/air non-premixed flame

This video (real time) shows the effect of an oscillating electric field of varying intensity and constant frequency on a methane flame burning in air (the flame is ~15 cm tall in this case).
The field is applied via a wire electrode (shown on the left of the flame, pointed at the base of the flame), which is insulated by a glass shell, raised to a large oscillating potential.
The counterelectrode is outside the field of view and consists of a 50x50cm vertically oriented grounded plate.
The field conditions here have been chosen to show the field-dependent transition between attractive interaction and repulsive interaction.

published: 01 Dec 2011

Electromagnetic Field of an Oscillating Charge in AR, revised

Added more magnetic field lines to accompany the electric field lines. Also, CBSNewsSunday morning is gotta be one of the best shows on TV.

published: 16 Oct 2016

Electromagnetic field of an oscillating charge in Augmented Reality

The electric field lines are the red wavy lines. The magnetic field lines are the yellow (counterclockwise) and green (clockwise) circular arcs. A test charge (cube) on a second marker responds to the electric field. The electric field consists of the static coulomb field and the radiation field in the far-field approximation.

published: 11 Oct 2016

9. Accelerated Charges Radiating Electromagnetic Waves

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit BuszaGeneral discussion of electromagnetic fields produced by moving charges, in particular by charges that accelerate.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

published: 25 Oct 2013

Electromagnetic RLC oscillating circuit

This simulation deals with an electromagnetic oscillating circuit, consisting of a capacitor (center) and an inductor (i.e. a coil, on the right). The electric field of the capacitor (red) and the magnetic field of the inductor (blue) are indicated by field lines in the circuit diagram. The density of these field lines shows the strength of the corresponding field. In addition, you can see the charge signs of the two capacitor plates and arrows for the (conventional) current direction.

Oscillating charge

A charge oscillates sinusoidally in the vertical direction about the origin. Shown is the value of the y-component of the electric field where large positive/ne...

A charge oscillates sinusoidally in the vertical direction about the origin. Shown is the value of the y-component of the electric field where large positive/negative values is given by red/blue areas and small positive/negative values is given by light red/light blue areas.

A charge oscillates sinusoidally in the vertical direction about the origin. Shown is the value of the y-component of the electric field where large positive/negative values is given by red/blue areas and small positive/negative values is given by light red/light blue areas.

This video shows the electric and magnetic fields of a positive point charge, which is initially at rest, but which starts oscillating in the horizontal directi...

This video shows the electric and magnetic fields of a positive point charge, which is initially at rest, but which starts oscillating in the horizontal direction when the video starts.
In the beginning of the video, we see a simple Coulomb electric field due to the point charge (no magnetic fields are present yet). When the particle starts moving, disturbances in the field propagate at the speed of light. Radiation is emitted.
Note the so-called 'static zone' near the particle when it radiates - close to the particle, the electric field is more or less constant, except for the phase.
The coloring works as follows: each pixel has R, G, B components, which have values between 0 (black) and 1 (full intensity). The components are set using:
R = 0.5 + E.x
G = 0.5 + E.y
B = 0.5 + B.z
If all vector components are zero, the pixel is halfway between black/white, or grey. Vector components can be positive or negative and thus add/subtract red, green, or blue.
I computed the fields and made the video using a C++ program that I published on GitHub:
https://github.com/tbronzwaer/electrodynamics
The equations that describe the electric and magnetic fields of a moving charge are available on Wikipedia:
http://en.wikipedia.org/wiki/Li%C3%A9nard%E2%80%93Wiechert_potential#Corresponding_values_of_electric_and_magnetic_fields

This video shows the electric and magnetic fields of a positive point charge, which is initially at rest, but which starts oscillating in the horizontal direction when the video starts.
In the beginning of the video, we see a simple Coulomb electric field due to the point charge (no magnetic fields are present yet). When the particle starts moving, disturbances in the field propagate at the speed of light. Radiation is emitted.
Note the so-called 'static zone' near the particle when it radiates - close to the particle, the electric field is more or less constant, except for the phase.
The coloring works as follows: each pixel has R, G, B components, which have values between 0 (black) and 1 (full intensity). The components are set using:
R = 0.5 + E.x
G = 0.5 + E.y
B = 0.5 + B.z
If all vector components are zero, the pixel is halfway between black/white, or grey. Vector components can be positive or negative and thus add/subtract red, green, or blue.
I computed the fields and made the video using a C++ program that I published on GitHub:
https://github.com/tbronzwaer/electrodynamics
The equations that describe the electric and magnetic fields of a moving charge are available on Wikipedia:
http://en.wikipedia.org/wiki/Li%C3%A9nard%E2%80%93Wiechert_potential#Corresponding_values_of_electric_and_magnetic_fields

Capacitor Charge Demo: Oscillating Ball

This is a demonstration of capacitor charge, carried out by suspending a ball between two capacitor plates of opposite charges. When the ball touches one plate...

This is a demonstration of capacitor charge, carried out by suspending a ball between two capacitor plates of opposite charges. When the ball touches one plate, it acquires charge of the same sign as that plate. The ball is then attracted to the other plate, acquires charge of the same sign as that plate, and returns to the first plate, and so on, the result being fast oscillations of the ball between the two plates.
This demonstration was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and RebeccaWhitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, ExecutiveVice Provost and Dean of Academic and Instructional Services.

This is a demonstration of capacitor charge, carried out by suspending a ball between two capacitor plates of opposite charges. When the ball touches one plate, it acquires charge of the same sign as that plate. The ball is then attracted to the other plate, acquires charge of the same sign as that plate, and returns to the first plate, and so on, the result being fast oscillations of the ball between the two plates.
This demonstration was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and RebeccaWhitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, ExecutiveVice Provost and Dean of Academic and Instructional Services.

published:20 Aug 2016

views:742

back

Electric and magnetic field generated by oscillating electric charge.avi

Light, photons, and oscillating electromagnetic fields explained.

This video explains the particle nature of light, its connection to electric and magnetic field oscillations, their connection to frequency, wavelength, and to ...

This video explains the particle nature of light, its connection to electric and magnetic field oscillations, their connection to frequency, wavelength, and to the energy of a photon.
"Generally, EM radiation, or EMR (the designation "radiation" excludes static electric and magnetic and near fields), is classified by wavelength into radio, microwave, infrared, the visible region that we perceive as light, ultraviolet, X-rays and gamma rays.
The behavior of EMR depends on its wavelength. Higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. When EMR interacts with single atoms and molecules, its behavior depends on the amount of energy per quantum it carries.
EMR in the visible light region consists of quanta (called photons) that are at the lower end of the energies that are capable of causing electronic excitation within molecules, which leads to changes in the bonding or chemistry of the molecule. At the lower end of the visible light spectrum, EMR becomes invisible to humans (infrared) because its photons no longer have enough individual energy to cause a lasting molecular change (a change in conformation) in the visual molecule retinal in the human retina, which change triggers the sensation of vision." from Wikipedia "light", www.wikipedia.com, Sept 9, 2017

This video explains the particle nature of light, its connection to electric and magnetic field oscillations, their connection to frequency, wavelength, and to the energy of a photon.
"Generally, EM radiation, or EMR (the designation "radiation" excludes static electric and magnetic and near fields), is classified by wavelength into radio, microwave, infrared, the visible region that we perceive as light, ultraviolet, X-rays and gamma rays.
The behavior of EMR depends on its wavelength. Higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. When EMR interacts with single atoms and molecules, its behavior depends on the amount of energy per quantum it carries.
EMR in the visible light region consists of quanta (called photons) that are at the lower end of the energies that are capable of causing electronic excitation within molecules, which leads to changes in the bonding or chemistry of the molecule. At the lower end of the visible light spectrum, EMR becomes invisible to humans (infrared) because its photons no longer have enough individual energy to cause a lasting molecular change (a change in conformation) in the visual molecule retinal in the human retina, which change triggers the sensation of vision." from Wikipedia "light", www.wikipedia.com, Sept 9, 2017

For more information:
http://www.7activestudio.com
info@7activestudio.com
http://www.7activemedical.com/
info@7activemedical.com
http://www.sciencetuts.com/
7activestudio@gmail.com
Contact: +91- 9700061777,
040-64501777 / 65864777
7 ActiveTechnology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of HappyLearning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use.
Electro magnetic waves: ELECTROMAGNETIC WAVES:- It was observed that a time varying magnetic field acts as a source of electric field and a changing electric filed give raise to magnetic field they any one of above fields changing with time a field of other kind id introduced. Consider a charge oscillating with same frequency this produces an oscillating electric filed in space .which produces an oscillating magnetic filed .this oscillating electric and magnetic field regenerate each other the wave propagates through the space .the frequency of electromagnetic wave is equal to frequency of oscillation of the charge.The detailed study shows that plane progressing electromagnetic wave so produced the following characteristics. The electric vector E ⃗ the magnetic vector B ⃗ are mutually perpendicular to each other are travelling in space to generate electromagnetic progressive wave and the direction of propagation of the wave is perpendicular to both electric vector and magnetic vector If the wave propagates in X-direction the electric field in y- direction the magnetic field is in the z-directions.

For more information:
http://www.7activestudio.com
info@7activestudio.com
http://www.7activemedical.com/
info@7activemedical.com
http://www.sciencetuts.com/
7activestudio@gmail.com
Contact: +91- 9700061777,
040-64501777 / 65864777
7 ActiveTechnology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of HappyLearning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use.
Electro magnetic waves: ELECTROMAGNETIC WAVES:- It was observed that a time varying magnetic field acts as a source of electric field and a changing electric filed give raise to magnetic field they any one of above fields changing with time a field of other kind id introduced. Consider a charge oscillating with same frequency this produces an oscillating electric filed in space .which produces an oscillating magnetic filed .this oscillating electric and magnetic field regenerate each other the wave propagates through the space .the frequency of electromagnetic wave is equal to frequency of oscillation of the charge.The detailed study shows that plane progressing electromagnetic wave so produced the following characteristics. The electric vector E ⃗ the magnetic vector B ⃗ are mutually perpendicular to each other are travelling in space to generate electromagnetic progressive wave and the direction of propagation of the wave is perpendicular to both electric vector and magnetic vector If the wave propagates in X-direction the electric field in y- direction the magnetic field is in the z-directions.

03 How Vibrating Charges Emit Electromagnetic Waves

This lesson uses a simple antenna system to show how a changing electric field causes a changing magnetic field to propagate outward from the antenna. The chang...

This lesson uses a simple antenna system to show how a changing electric field causes a changing magnetic field to propagate outward from the antenna. The changes in the fields travel outwards from the transmitter at the speed of light.

This lesson uses a simple antenna system to show how a changing electric field causes a changing magnetic field to propagate outward from the antenna. The changes in the fields travel outwards from the transmitter at the speed of light.

Electron's frequency of oscillation due to a ring of charge

In this video I find the frequency of oscillation of an electron near the center of a ring of positive charge. I first find the force on the electron by calcul...

In this video I find the frequency of oscillation of an electron near the center of a ring of positive charge. I first find the force on the electron by calculating the electric field along the axis of the ring.

In this video I find the frequency of oscillation of an electron near the center of a ring of positive charge. I first find the force on the electron by calculating the electric field along the axis of the ring.

published:28 Feb 2015

views:2460

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Effect of oscillating electric field on a methane/air non-premixed flame

This video (real time) shows the effect of an oscillating electric field of varying intensity and constant frequency on a methane flame burning in air (the flam...

This video (real time) shows the effect of an oscillating electric field of varying intensity and constant frequency on a methane flame burning in air (the flame is ~15 cm tall in this case).
The field is applied via a wire electrode (shown on the left of the flame, pointed at the base of the flame), which is insulated by a glass shell, raised to a large oscillating potential.
The counterelectrode is outside the field of view and consists of a 50x50cm vertically oriented grounded plate.
The field conditions here have been chosen to show the field-dependent transition between attractive interaction and repulsive interaction.

This video (real time) shows the effect of an oscillating electric field of varying intensity and constant frequency on a methane flame burning in air (the flame is ~15 cm tall in this case).
The field is applied via a wire electrode (shown on the left of the flame, pointed at the base of the flame), which is insulated by a glass shell, raised to a large oscillating potential.
The counterelectrode is outside the field of view and consists of a 50x50cm vertically oriented grounded plate.
The field conditions here have been chosen to show the field-dependent transition between attractive interaction and repulsive interaction.

Electromagnetic field of an oscillating charge in Augmented Reality

The electric field lines are the red wavy lines. The magnetic field lines are the yellow (counterclockwise) and green (clockwise) circular arcs. A test charge (...

The electric field lines are the red wavy lines. The magnetic field lines are the yellow (counterclockwise) and green (clockwise) circular arcs. A test charge (cube) on a second marker responds to the electric field. The electric field consists of the static coulomb field and the radiation field in the far-field approximation.

The electric field lines are the red wavy lines. The magnetic field lines are the yellow (counterclockwise) and green (clockwise) circular arcs. A test charge (cube) on a second marker responds to the electric field. The electric field consists of the static coulomb field and the radiation field in the far-field approximation.

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit BuszaGeneral discussion of electromagnetic fields produced by moving charges, in particular by charges that accelerate.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit BuszaGeneral discussion of electromagnetic fields produced by moving charges, in particular by charges that accelerate.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

Electromagnetic RLC oscillating circuit

This simulation deals with an electromagnetic oscillating circuit, consisting of a capacitor (center) and an inductor (i.e. a coil, on the right). The electric ...

This simulation deals with an electromagnetic oscillating circuit, consisting of a capacitor (center) and an inductor (i.e. a coil, on the right). The electric field of the capacitor (red) and the magnetic field of the inductor (blue) are indicated by field lines in the circuit diagram. The density of these field lines shows the strength of the corresponding field. In addition, you can see the charge signs of the two capacitor plates and arrows for the (conventional) current direction.

This simulation deals with an electromagnetic oscillating circuit, consisting of a capacitor (center) and an inductor (i.e. a coil, on the right). The electric field of the capacitor (red) and the magnetic field of the inductor (blue) are indicated by field lines in the circuit diagram. The density of these field lines shows the strength of the corresponding field. In addition, you can see the charge signs of the two capacitor plates and arrows for the (conventional) current direction.

9. Accelerated Charges Radiating Electromagnetic Waves

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit BuszaGeneral discussion of electromagnetic fields produced by moving charges, in particular by charges that accelerate.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

June05 Oscillating Charges Antenna Theory

published: 22 Oct 2013

BocaPhysics Series on Electromagnetism: Charged Particle in Motion Part I

It is shown that in order for a charged particle in a vacuum to radiate, it must accelerate. The Heaviside form of the expression for the electric field due to a charged particle traveling at uniform velocity is derived. For such a charged particle, there is no radiation. In addition, Cerenkov radiation is mentioned briefly as well as several systems in which there is no radiation even though the charges are accelerating. In part II of this lecture, the radiation emitted by a charged particle for which the velocity is parallel to the acceleration and by a charged particle for which the velocity is perpendicular to the acceleration will be discussed. Visit www.bocaphysics.com for references to the articles mentioned in this lecture.

published: 24 Feb 2017

10. Interference of Electromagnetic Waves

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit Busza
Consideration of the interference of electromagnetic waves produced by multiple oscillating charges, and the fields produced at distances from the charges where all other fields can be ignored and the rays from every charge are approximated as parallel.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

This is the entire salvaging process of a Makita power tool battery. These are high discharge 18650 cells and you can basically power anything with them. The sky is the limit. Actually the sky is not the limit as you can fly a drone with it, too!

7th video in this Ebike series. Home made solar powered 12V Li-ion battery pack for 12V DC accessories. Here's the parts list:
1) Solar charge controller: This is a special Li-ion solar charge controller that only works with Li-ion batteries (does not work with Pb batteries). I bought it on ebay. There is absolutely no model/part number on this one. But there are plenty on ebay and Amazon. Just search for "12V Li-ion solar charge controller". It's rated at 3 Amps. I did a review a while back and here's the review video for this controller: https://www.youtube.com/watch?v=jhvKkpWZ8l0
2) 12V solar panel: any 12V panel would do. Open circuit voltage is about 18V-20V. I got mine a while back locally (craigslist)
3) Panasonic 18650 battery cells: Free! Salvaged from old laptop batteries.
4) Do...

published: 04 Oct 2017

BocaPhysics Series on Electromagnetism: Magnetic Dipole Radiation

The fields due to an oscillating magnetic dipole are found by making use of the fields due to an oscillating electric dipole, and the fields due to a small current-carrying loop are derived from the retarded vector potential. Finally, the fields due to both systems are compared.

published: 20 Jan 2017

9.1.2 Electric Dipole Radiation

Here we examine an oscillating electric dipole and calculate the V, A, E, B, and S fields. We also learn why the sky is blue and sunsets orange.
Be sure to subscribe, like and comment.
Share this with your friends.

DipolePotential

This OPT 262 tutorial shows the parallels between the scalar potential (i.e. voltage) of a static point charge and the vector potential of an oscillating point dipole.

published: 09 Sep 2014

Charging phone battery, without a phone charger, in emergency.

In this video, I explain some of the basics of battery chargers and how you can safely put a partial charge on a cellular phone battery, in an emergency, without a phone charger. This involves using a car battery or other battery, and a current limiting resistor.

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit BuszaGeneral discussion of electromagnetic fields produced by moving charges, in particular by charges that accelerate.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit BuszaGeneral discussion of electromagnetic fields produced by moving charges, in particular by charges that accelerate.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

BocaPhysics Series on Electromagnetism: Charged Particle in Motion Part I

It is shown that in order for a charged particle in a vacuum to radiate, it must accelerate. The Heaviside form of the expression for the electric field due t...

It is shown that in order for a charged particle in a vacuum to radiate, it must accelerate. The Heaviside form of the expression for the electric field due to a charged particle traveling at uniform velocity is derived. For such a charged particle, there is no radiation. In addition, Cerenkov radiation is mentioned briefly as well as several systems in which there is no radiation even though the charges are accelerating. In part II of this lecture, the radiation emitted by a charged particle for which the velocity is parallel to the acceleration and by a charged particle for which the velocity is perpendicular to the acceleration will be discussed. Visit www.bocaphysics.com for references to the articles mentioned in this lecture.

It is shown that in order for a charged particle in a vacuum to radiate, it must accelerate. The Heaviside form of the expression for the electric field due to a charged particle traveling at uniform velocity is derived. For such a charged particle, there is no radiation. In addition, Cerenkov radiation is mentioned briefly as well as several systems in which there is no radiation even though the charges are accelerating. In part II of this lecture, the radiation emitted by a charged particle for which the velocity is parallel to the acceleration and by a charged particle for which the velocity is perpendicular to the acceleration will be discussed. Visit www.bocaphysics.com for references to the articles mentioned in this lecture.

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit Busza
Consideration of the interference of electromagnetic waves produced by multiple oscillating charges, and the fields produced at distances from the charges where all other fields can be ignored and the rays from every charge are approximated as parallel.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit Busza
Consideration of the interference of electromagnetic waves produced by multiple oscillating charges, and the fields produced at distances from the charges where all other fields can be ignored and the rays from every charge are approximated as parallel.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

Physical Science Study Committee Films (PSSC) playlist: https://www.youtube.com/playlist?list=PL_hX5wLdhf_KuXqv0QzMoNQYgR_nBxETx
Physics & Physical Sciences playlist: https://www.youtube.com/playlist?list=PL_hX5wLdhf_JKIMNk88rKCkhpK73_qmHY
"George J. Wolga shows why we believe in the unity of the electromagnetic radiation spectrum. He performs experiments which show that the radiation arises from accelerated charges and consists of transverse waves that can be polarized."
Public domain film, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
https://en.wikipedia.org/wiki/Electromagnetic_radiation
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-, and gamma radiation.
Classically, electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum. The oscillations of the two fields are perpendicular to each other and perpendicular to the direction of energy and wave propagation, forming a transverse wave. The wavefront of electromagnetic waves emitted from a point source (such as a lightbulb) is a sphere. The position of an electromagnetic wave within the electromagnetic spectrum could be characterized by either its frequency of oscillation or its wavelength. The electromagnetic spectrum includes, in order of increasing frequency and decreasing wavelength: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.
Electromagnetic waves are produced whenever charged particles are accelerated, and these waves can subsequently interact with other charged particles. EM waves carry energy, momentum and angular momentum away from their source particle and can impart those quantities to matter with which they interact. Quanta of EM waves are called photons, whose rest mass is zero, but whose energy, or equivalent total (relativistic) mass, is not zero so they are still affected by gravity. Electromagnetic radiation is associated with those EM waves that are free to propagate themselves ("radiate") without the continuing influence of the moving charges that produced them, because they have achieved sufficient distance from those charges. Thus, EMR is sometimes referred to as the far field. In this language, the near field refers to EM fields near the charges and current that directly produced them, specifically, electromagnetic induction and electrostatic induction phenomena.
In the quantum theory of electromagnetism, EMR consists of photons, the elementary particles responsible for all electromagnetic interactions. Quantum effects provide additional sources of EMR, such as the transition of electrons to lower energy levels in an atom and black-body radiation. The energy of an individual photon is quantized and is greater for photons of higher frequency. This relationship is given by Planck's equation E = hν, where E is the energy per photon, ν is the frequency of the photon, and h is Planck's constant. A single gamma ray photon, for example, might carry ~100,000 times the energy of a single photon of visible light.
The effects of EMR upon chemical compounds and biological organisms depend both upon the radiation's power and its frequency. EMR of visible or lower frequencies (i.e., visible light, infrared, microwaves, and radio waves) is called non-ionizing radiation, because its photons do not individually have enough energy to ionize atoms or molecules. The effects of these radiations on chemical systems and living tissue are caused primarily by heating effects from the combined energy transfer of many photons. In contrast, high ultraviolet, X-rays and gamma rays are called ionizing radiation since individual photons of such high frequency have enough energy to ionize molecules or break chemical bonds. These radiations have the ability to cause chemical reactions and damage living cells beyond that resulting from simple heating, and can be a health hazard...

Physical Science Study Committee Films (PSSC) playlist: https://www.youtube.com/playlist?list=PL_hX5wLdhf_KuXqv0QzMoNQYgR_nBxETx
Physics & Physical Sciences playlist: https://www.youtube.com/playlist?list=PL_hX5wLdhf_JKIMNk88rKCkhpK73_qmHY
"George J. Wolga shows why we believe in the unity of the electromagnetic radiation spectrum. He performs experiments which show that the radiation arises from accelerated charges and consists of transverse waves that can be polarized."
Public domain film, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
https://en.wikipedia.org/wiki/Electromagnetic_radiation
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-, and gamma radiation.
Classically, electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum. The oscillations of the two fields are perpendicular to each other and perpendicular to the direction of energy and wave propagation, forming a transverse wave. The wavefront of electromagnetic waves emitted from a point source (such as a lightbulb) is a sphere. The position of an electromagnetic wave within the electromagnetic spectrum could be characterized by either its frequency of oscillation or its wavelength. The electromagnetic spectrum includes, in order of increasing frequency and decreasing wavelength: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.
Electromagnetic waves are produced whenever charged particles are accelerated, and these waves can subsequently interact with other charged particles. EM waves carry energy, momentum and angular momentum away from their source particle and can impart those quantities to matter with which they interact. Quanta of EM waves are called photons, whose rest mass is zero, but whose energy, or equivalent total (relativistic) mass, is not zero so they are still affected by gravity. Electromagnetic radiation is associated with those EM waves that are free to propagate themselves ("radiate") without the continuing influence of the moving charges that produced them, because they have achieved sufficient distance from those charges. Thus, EMR is sometimes referred to as the far field. In this language, the near field refers to EM fields near the charges and current that directly produced them, specifically, electromagnetic induction and electrostatic induction phenomena.
In the quantum theory of electromagnetism, EMR consists of photons, the elementary particles responsible for all electromagnetic interactions. Quantum effects provide additional sources of EMR, such as the transition of electrons to lower energy levels in an atom and black-body radiation. The energy of an individual photon is quantized and is greater for photons of higher frequency. This relationship is given by Planck's equation E = hν, where E is the energy per photon, ν is the frequency of the photon, and h is Planck's constant. A single gamma ray photon, for example, might carry ~100,000 times the energy of a single photon of visible light.
The effects of EMR upon chemical compounds and biological organisms depend both upon the radiation's power and its frequency. EMR of visible or lower frequencies (i.e., visible light, infrared, microwaves, and radio waves) is called non-ionizing radiation, because its photons do not individually have enough energy to ionize atoms or molecules. The effects of these radiations on chemical systems and living tissue are caused primarily by heating effects from the combined energy transfer of many photons. In contrast, high ultraviolet, X-rays and gamma rays are called ionizing radiation since individual photons of such high frequency have enough energy to ionize molecules or break chemical bonds. These radiations have the ability to cause chemical reactions and damage living cells beyond that resulting from simple heating, and can be a health hazard...

This is the entire salvaging process of a Makita power tool battery. These are high discharge 18650 cells and you can basically power anything with them. The sk...

This is the entire salvaging process of a Makita power tool battery. These are high discharge 18650 cells and you can basically power anything with them. The sky is the limit. Actually the sky is not the limit as you can fly a drone with it, too!

This is the entire salvaging process of a Makita power tool battery. These are high discharge 18650 cells and you can basically power anything with them. The sky is the limit. Actually the sky is not the limit as you can fly a drone with it, too!

7th video in this Ebike series. Home made solar powered 12V Li-ion battery pack for 12V DC accessories. Here's the parts list:
1) Solar charge controller: This is a special Li-ion solar charge controller that only works with Li-ion batteries (does not work with Pb batteries). I bought it on ebay. There is absolutely no model/part number on this one. But there are plenty on ebay and Amazon. Just search for "12V Li-ion solar charge controller". It's rated at 3 Amps. I did a review a while back and here's the review video for this controller: https://www.youtube.com/watch?v=jhvKkpWZ8l0
2) 12V solar panel: any 12V panel would do. Open circuit voltage is about 18V-20V. I got mine a while back locally (craigslist)
3) Panasonic 18650 battery cells: Free! Salvaged from old laptop batteries.
4) Double sided tape: Bought locally at Daiso for $1.50 (Japanese $1.50 store). This is a high quality double sided foam tape, made in Japan for $1.50.
If you want to learn how to install a balance charging cable for a Li-ion battery pack, here's the video: https://youtu.be/yZKS0AS6QQo
Music: Night at the Dance Hall by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://www.twinmusicom.org/song/309/night-at-the-dance-hall
Artist: http://www.twinmusicom.org

7th video in this Ebike series. Home made solar powered 12V Li-ion battery pack for 12V DC accessories. Here's the parts list:
1) Solar charge controller: This is a special Li-ion solar charge controller that only works with Li-ion batteries (does not work with Pb batteries). I bought it on ebay. There is absolutely no model/part number on this one. But there are plenty on ebay and Amazon. Just search for "12V Li-ion solar charge controller". It's rated at 3 Amps. I did a review a while back and here's the review video for this controller: https://www.youtube.com/watch?v=jhvKkpWZ8l0
2) 12V solar panel: any 12V panel would do. Open circuit voltage is about 18V-20V. I got mine a while back locally (craigslist)
3) Panasonic 18650 battery cells: Free! Salvaged from old laptop batteries.
4) Double sided tape: Bought locally at Daiso for $1.50 (Japanese $1.50 store). This is a high quality double sided foam tape, made in Japan for $1.50.
If you want to learn how to install a balance charging cable for a Li-ion battery pack, here's the video: https://youtu.be/yZKS0AS6QQo
Music: Night at the Dance Hall by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://www.twinmusicom.org/song/309/night-at-the-dance-hall
Artist: http://www.twinmusicom.org

BocaPhysics Series on Electromagnetism: Magnetic Dipole Radiation

The fields due to an oscillating magnetic dipole are found by making use of the fields due to an oscillating electric dipole, and the fields due to a small curr...

The fields due to an oscillating magnetic dipole are found by making use of the fields due to an oscillating electric dipole, and the fields due to a small current-carrying loop are derived from the retarded vector potential. Finally, the fields due to both systems are compared.

The fields due to an oscillating magnetic dipole are found by making use of the fields due to an oscillating electric dipole, and the fields due to a small current-carrying loop are derived from the retarded vector potential. Finally, the fields due to both systems are compared.

9.1.2 Electric Dipole Radiation

Here we examine an oscillating electric dipole and calculate the V, A, E, B, and S fields. We also learn why the sky is blue and sunsets orange.
Be sure to sub...

Here we examine an oscillating electric dipole and calculate the V, A, E, B, and S fields. We also learn why the sky is blue and sunsets orange.
Be sure to subscribe, like and comment.
Share this with your friends.

Here we examine an oscillating electric dipole and calculate the V, A, E, B, and S fields. We also learn why the sky is blue and sunsets orange.
Be sure to subscribe, like and comment.
Share this with your friends.

Charging phone battery, without a phone charger, in emergency.

In this video, I explain some of the basics of battery chargers and how you can safely put a partial charge on a cellular phone battery, in an emergency, withou...

In this video, I explain some of the basics of battery chargers and how you can safely put a partial charge on a cellular phone battery, in an emergency, without a phone charger. This involves using a car battery or other battery, and a current limiting resistor.

In this video, I explain some of the basics of battery chargers and how you can safely put a partial charge on a cellular phone battery, in an emergency, without a phone charger. This involves using a car battery or other battery, and a current limiting resistor.

Oscillating charge

A charge oscillates sinusoidally in the vertical direction about the origin. Shown is the value of the y-component of the electric field where large positive/negative values is given by red/blue areas and small positive/negative values is given by light red/light blue areas.

This video shows the electric and magnetic fields of a positive point charge, which is initially at rest, but which starts oscillating in the horizontal direction when the video starts.
In the beginning of the video, we see a simple Coulomb electric field due to the point charge (no magnetic fields are present yet). When the particle starts moving, disturbances in the field propagate at the speed of light. Radiation is emitted.
Note the so-called 'static zone' near the particle when it radiates - close to the particle, the electric field is more or less constant, except for the phase.
The coloring works as follows: each pixel has R, G, B components, which have values between 0 (black) and 1 (full intensity). The components are set using:
R = 0.5 + E.x
G = 0.5 + E.y
B = 0.5 + B.z
If all vector components are zero, the pixel is halfway between black/white, or grey. Vector components can be positive or negative and thus add/subtract red, green, or blue.
I computed the fields and made the video using a C++ program that I published on GitHub:
https://github.com/tbronzwaer/electrodynamics
The equations that describe the electric and magnetic fields of a moving charge are available on Wikipedia:
http://en.wikipedia.org/wiki/Li%C3%A9nard%E2%80%93Wiechert_potential#Corresponding_values_of_electric_and_magnetic_fields

1:59

Capacitor Charge Demo: Oscillating Ball

This is a demonstration of capacitor charge, carried out by suspending a ball between two ...

Capacitor Charge Demo: Oscillating Ball

This is a demonstration of capacitor charge, carried out by suspending a ball between two capacitor plates of opposite charges. When the ball touches one plate, it acquires charge of the same sign as that plate. The ball is then attracted to the other plate, acquires charge of the same sign as that plate, and returns to the first plate, and so on, the result being fast oscillations of the ball between the two plates.
This demonstration was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and RebeccaWhitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, ExecutiveVice Provost and Dean of Academic and Instructional Services.

0:19

Electric and magnetic field generated by oscillating electric charge.avi

Light, photons, and oscillating electromagnetic fields explained.

This video explains the particle nature of light, its connection to electric and magnetic field oscillations, their connection to frequency, wavelength, and to the energy of a photon.
"Generally, EM radiation, or EMR (the designation "radiation" excludes static electric and magnetic and near fields), is classified by wavelength into radio, microwave, infrared, the visible region that we perceive as light, ultraviolet, X-rays and gamma rays.
The behavior of EMR depends on its wavelength. Higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. When EMR interacts with single atoms and molecules, its behavior depends on the amount of energy per quantum it carries.
EMR in the visible light region consists of quanta (called photons) that are at the lower end of the energies that are capable of causing electronic excitation within molecules, which leads to changes in the bonding or chemistry of the molecule. At the lower end of the visible light spectrum, EMR becomes invisible to humans (infrared) because its photons no longer have enough individual energy to cause a lasting molecular change (a change in conformation) in the visual molecule retinal in the human retina, which change triggers the sensation of vision." from Wikipedia "light", www.wikipedia.com, Sept 9, 2017

2:42

ELECTROMAGNETIC WAVES PART 01

For more information:
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info@7activestudio.com
http://www.7ac...

ELECTROMAGNETIC WAVES PART 01

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7 ActiveTechnology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of HappyLearning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use.
Electro magnetic waves: ELECTROMAGNETIC WAVES:- It was observed that a time varying magnetic field acts as a source of electric field and a changing electric filed give raise to magnetic field they any one of above fields changing with time a field of other kind id introduced. Consider a charge oscillating with same frequency this produces an oscillating electric filed in space .which produces an oscillating magnetic filed .this oscillating electric and magnetic field regenerate each other the wave propagates through the space .the frequency of electromagnetic wave is equal to frequency of oscillation of the charge.The detailed study shows that plane progressing electromagnetic wave so produced the following characteristics. The electric vector E ⃗ the magnetic vector B ⃗ are mutually perpendicular to each other are travelling in space to generate electromagnetic progressive wave and the direction of propagation of the wave is perpendicular to both electric vector and magnetic vector If the wave propagates in X-direction the electric field in y- direction the magnetic field is in the z-directions.

6:23

03 How Vibrating Charges Emit Electromagnetic Waves

This lesson uses a simple antenna system to show how a changing electric field causes a ch...

03 How Vibrating Charges Emit Electromagnetic Waves

This lesson uses a simple antenna system to show how a changing electric field causes a changing magnetic field to propagate outward from the antenna. The changes in the fields travel outwards from the transmitter at the speed of light.

9:01

Electron's frequency of oscillation due to a ring of charge

In this video I find the frequency of oscillation of an electron near the center of a ring...

Electron's frequency of oscillation due to a ring of charge

In this video I find the frequency of oscillation of an electron near the center of a ring of positive charge. I first find the force on the electron by calculating the electric field along the axis of the ring.

0:10

Effect of oscillating electric field on a methane/air non-premixed flame

This video (real time) shows the effect of an oscillating electric field of varying intens...

Effect of oscillating electric field on a methane/air non-premixed flame

This video (real time) shows the effect of an oscillating electric field of varying intensity and constant frequency on a methane flame burning in air (the flame is ~15 cm tall in this case).
The field is applied via a wire electrode (shown on the left of the flame, pointed at the base of the flame), which is insulated by a glass shell, raised to a large oscillating potential.
The counterelectrode is outside the field of view and consists of a 50x50cm vertically oriented grounded plate.
The field conditions here have been chosen to show the field-dependent transition between attractive interaction and repulsive interaction.

2:00

Electromagnetic Field of an Oscillating Charge in AR, revised

Added more magnetic field lines to accompany the electric field lines. Also, CBS News Sund...

9. Accelerated Charges Radiating Electromagnetic Waves

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit BuszaGeneral discussion of electromagnetic fields produced by moving charges, in particular by charges that accelerate.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

BocaPhysics Series on Electromagnetism: Charged Particle in Motion Part I

It is shown that in order for a charged particle in a vacuum to radiate, it must accelerate. The Heaviside form of the expression for the electric field due to a charged particle traveling at uniform velocity is derived. For such a charged particle, there is no radiation. In addition, Cerenkov radiation is mentioned briefly as well as several systems in which there is no radiation even though the charges are accelerating. In part II of this lecture, the radiation emitted by a charged particle for which the velocity is parallel to the acceleration and by a charged particle for which the velocity is perpendicular to the acceleration will be discussed. Visit www.bocaphysics.com for references to the articles mentioned in this lecture.

10. Interference of Electromagnetic Waves

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/
Instructor: Wit Busza
Consideration of the interference of electromagnetic waves produced by multiple oscillating charges, and the fields produced at distances from the charges where all other fields can be ignored and the rays from every charge are approximated as parallel.
*NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.*
License: Creative CommonsBY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

Physical Science Study Committee Films (PSSC) playlist: https://www.youtube.com/playlist?list=PL_hX5wLdhf_KuXqv0QzMoNQYgR_nBxETx
Physics & Physical Sciences playlist: https://www.youtube.com/playlist?list=PL_hX5wLdhf_JKIMNk88rKCkhpK73_qmHY
"George J. Wolga shows why we believe in the unity of the electromagnetic radiation spectrum. He performs experiments which show that the radiation arises from accelerated charges and consists of transverse waves that can be polarized."
Public domain film, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
https://en.wikipedia.org/wiki/Electromagnetic_radiation
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-, and gamma radiation.
Classically, electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum. The oscillations of the two fields are perpendicular to each other and perpendicular to the direction of energy and wave propagation, forming a transverse wave. The wavefront of electromagnetic waves emitted from a point source (such as a lightbulb) is a sphere. The position of an electromagnetic wave within the electromagnetic spectrum could be characterized by either its frequency of oscillation or its wavelength. The electromagnetic spectrum includes, in order of increasing frequency and decreasing wavelength: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.
Electromagnetic waves are produced whenever charged particles are accelerated, and these waves can subsequently interact with other charged particles. EM waves carry energy, momentum and angular momentum away from their source particle and can impart those quantities to matter with which they interact. Quanta of EM waves are called photons, whose rest mass is zero, but whose energy, or equivalent total (relativistic) mass, is not zero so they are still affected by gravity. Electromagnetic radiation is associated with those EM waves that are free to propagate themselves ("radiate") without the continuing influence of the moving charges that produced them, because they have achieved sufficient distance from those charges. Thus, EMR is sometimes referred to as the far field. In this language, the near field refers to EM fields near the charges and current that directly produced them, specifically, electromagnetic induction and electrostatic induction phenomena.
In the quantum theory of electromagnetism, EMR consists of photons, the elementary particles responsible for all electromagnetic interactions. Quantum effects provide additional sources of EMR, such as the transition of electrons to lower energy levels in an atom and black-body radiation. The energy of an individual photon is quantized and is greater for photons of higher frequency. This relationship is given by Planck's equation E = hν, where E is the energy per photon, ν is the frequency of the photon, and h is Planck's constant. A single gamma ray photon, for example, might carry ~100,000 times the energy of a single photon of visible light.
The effects of EMR upon chemical compounds and biological organisms depend both upon the radiation's power and its frequency. EMR of visible or lower frequencies (i.e., visible light, infrared, microwaves, and radio waves) is called non-ionizing radiation, because its photons do not individually have enough energy to ionize atoms or molecules. The effects of these radiations on chemical systems and living tissue are caused primarily by heating effects from the combined energy transfer of many photons. In contrast, high ultraviolet, X-rays and gamma rays are called ionizing radiation since individual photons of such high frequency have enough energy to ionize molecules or break chemical bonds. These radiations have the ability to cause chemical reactions and damage living cells beyond that resulting from simple heating, and can be a health hazard...

This is the entire salvaging process of a Makita power tool battery. These are high discharge 18650 cells and you can basically power anything with them. The sky is the limit. Actually the sky is not the limit as you can fly a drone with it, too!

7th video in this Ebike series. Home made solar powered 12V Li-ion battery pack for 12V DC accessories. Here's the parts list:
1) Solar charge controller: This is a special Li-ion solar charge controller that only works with Li-ion batteries (does not work with Pb batteries). I bought it on ebay. There is absolutely no model/part number on this one. But there are plenty on ebay and Amazon. Just search for "12V Li-ion solar charge controller". It's rated at 3 Amps. I did a review a while back and here's the review video for this controller: https://www.youtube.com/watch?v=jhvKkpWZ8l0
2) 12V solar panel: any 12V panel would do. Open circuit voltage is about 18V-20V. I got mine a while back locally (craigslist)
3) Panasonic 18650 battery cells: Free! Salvaged from old laptop batteries.
4) Double sided tape: Bought locally at Daiso for $1.50 (Japanese $1.50 store). This is a high quality double sided foam tape, made in Japan for $1.50.
If you want to learn how to install a balance charging cable for a Li-ion battery pack, here's the video: https://youtu.be/yZKS0AS6QQo
Music: Night at the Dance Hall by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://www.twinmusicom.org/song/309/night-at-the-dance-hall
Artist: http://www.twinmusicom.org

49:10

BocaPhysics Series on Electromagnetism: Magnetic Dipole Radiation

The fields due to an oscillating magnetic dipole are found by making use of the fields due...

BocaPhysics Series on Electromagnetism: Magnetic Dipole Radiation

The fields due to an oscillating magnetic dipole are found by making use of the fields due to an oscillating electric dipole, and the fields due to a small current-carrying loop are derived from the retarded vector potential. Finally, the fields due to both systems are compared.

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Gizmodo reported on Wednesday that a former Google engineer is suing the company for discrimination, harassment, retaliation, and wrongful termination ...Chevalier's posts had been quoting in Damore's lawsuit against Google, who is also suing the company for alleged discrimination against conservative white men ... “Firing the employee who pushed back against the bullies was exactly the wrong step to take.” ... But the effect is the same....

OSLO. Sea levels will rise between 0.7 and 1.2 metres in the next two centuries even if governments end the fossil fuel era as promised under the Paris climate agreement, scientists said on Tuesday ...Ocean levels will rise inexorably because heat-trapping industrial gases already em­­itted will linger in the atmosphere, melting more ice, it said. In addition, water naturally expands as it warms above four degrees Celsius (39.2F) ... ....

The woman tasked with caring for accused Florida shooter Nikolas Cruz and his brother have moved quickly to file court papers seeking control of their inheritance the day after the massacre at Majory Stoneman Douglas High School, Newsweek reported ... In the document, Deschamps argued she should be granted control as she is “caring for a 50 percent minor beneficiary." ... She could also charge a fee for administering the estate....

Article by WN.Com Correspondent Dallas DarlingTo this day it’s something my aunt hardly mentions, let alone discusses. And like a few other families living in the United States, it’s taboo and completely off limits ... Neither was it as widespread, since Japan had nearly conquered most of East Asia including parts of China. But still, U.S ... authorities continued the comfort station system absent formal slavery ... The U.S ... military authorities ... ....

A second Thibodaux High School student faces charges related to a list of students he and another male student planned to kill with a shotgun, authorities said.The students, both 17, are undergoing mental health evaluations, Lafourche SheriffCraig Webre said in a news release. Both face charges of terrorizing, and one also faces a simple assault charge.Lafourche schools Superintendent Jo Ann Matthews ... ....

SECCharges Former Bitcoin-Denominated Exchange and Operator With Fraud Washington D.C., Feb. 21, 2018 – The Securities and Exchange Commission today charged a former bitcoin-denominated platform and its operator with operating an unregistered securities exchange and defrauding users of that exchange. The SEC also charged the operator with making false and misleading statements in connection [...] ... ....

https.//www.theguardian.com/us-news/2018/feb/21/manafort-mueller-charges-new-rick-gates-trump-investigation-fbi-latest ... up pressure on the former campaign manager Paul Manafort by filing new sealed court charges against him....

(AP) — A Kentucky jailer has been indicted on a charge of malfeasance or neglect of county officer ... If convicted on the malfeasance charge before the end of his term in January, Burchett could ......

Currently, for a commercial building in tier one city, the charges are collected under heads.&nbsp; Developmentcharge for land, development charge for building, scrutiny fee, regularisation for land, security deposit for building, security deposit for display board, security deposit for building, septic tank deposit charge, infrastructure development charge for sewer network area....

County sheriff’s deputy charged with sexually assaulting 6 female inmates ... A Los Angeles County sheriff's deputy was charged Wednesday with sexually assaulting six female inmates in a jail facility last year, officials said ... The Sheriff's Department initially presented Scotti's case to prosecutors in October, but charges were not filed until Wednesday....